Commit | Line | Data |
8b445e33 |
1 | package DBIx::Class::Storage::DBI; |
2 | |
20a2c954 |
3 | use strict; |
4 | use warnings; |
8b445e33 |
5 | use DBI; |
aeaf3ce2 |
6 | use SQL::Abstract::Limit; |
28927b50 |
7 | use DBIx::Class::Storage::DBI::Cursor; |
8b445e33 |
8 | |
bd7efd39 |
9 | BEGIN { |
10 | |
11 | package DBIC::SQL::Abstract; # Temporary. Merge upstream. |
12 | |
13 | use base qw/SQL::Abstract::Limit/; |
14 | |
15 | sub select { |
16 | my ($self, $ident, @rest) = @_; |
17 | return $self->SUPER::select($self->from($ident), @rest); |
18 | } |
19 | |
20 | sub from { |
21 | my ($self, $from) = @_; |
22 | if (ref $from eq 'ARRAY') { |
23 | return $self->_recurse_from(@$from); |
24 | } elsif (ref $from eq 'HASH') { |
25 | return $self->_make_as($from); |
26 | } else { |
27 | return $from; |
28 | } |
29 | } |
30 | |
31 | sub _recurse_from { |
32 | my ($self, $from, @join) = @_; |
33 | my @sqlf; |
34 | push(@sqlf, $self->_make_as($from)); |
35 | foreach my $j (@join) { |
36 | my ($to, $on) = @$j; |
73856587 |
37 | |
38 | # check whether a join type exists |
39 | my $join_clause = ''; |
40 | if (ref($to) eq 'HASH' and exists($to->{-join_type})) { |
41 | $join_clause = ' '.uc($to->{-join_type}).' JOIN '; |
42 | } else { |
43 | $join_clause = ' JOIN '; |
44 | } |
45 | push(@sqlf, $join_clause); |
46 | |
bd7efd39 |
47 | if (ref $to eq 'ARRAY') { |
48 | push(@sqlf, '(', $self->_recurse_from(@$to), ')'); |
49 | } else { |
96cdbbab |
50 | push(@sqlf, $self->_make_as($to)); |
bd7efd39 |
51 | } |
52 | push(@sqlf, ' ON ', $self->_join_condition($on)); |
53 | } |
54 | return join('', @sqlf); |
55 | } |
56 | |
57 | sub _make_as { |
58 | my ($self, $from) = @_; |
96cdbbab |
59 | return join(' ', reverse each %{$self->_skip_options($from)}); |
73856587 |
60 | } |
61 | |
62 | sub _skip_options { |
63 | my ($self, $hash) = @_; |
64 | my $clean_hash = {}; |
65 | $clean_hash->{$_} = $hash->{$_} |
66 | for grep {!/^-/} keys %$hash; |
67 | return $clean_hash; |
bd7efd39 |
68 | } |
69 | |
70 | sub _join_condition { |
71 | my ($self, $cond) = @_; |
72 | die "no chance" unless ref $cond eq 'HASH'; |
73 | my %j; |
74 | for (keys %$cond) { my $x = '= '.$cond->{$_}; $j{$_} = \$x; }; |
75 | return $self->_recurse_where(\%j); |
76 | } |
77 | |
78 | } # End of BEGIN block |
79 | |
8b445e33 |
80 | use base qw/DBIx::Class/; |
81 | |
438adc0e |
82 | __PACKAGE__->load_components(qw/Exception AccessorGroup/); |
8b445e33 |
83 | |
223b8fe3 |
84 | __PACKAGE__->mk_group_accessors('simple' => |
48c69e7c |
85 | qw/connect_info _dbh _sql_maker debug cursor/); |
8b445e33 |
86 | |
87 | sub new { |
223b8fe3 |
88 | my $new = bless({}, ref $_[0] || $_[0]); |
28927b50 |
89 | $new->cursor("DBIx::Class::Storage::DBI::Cursor"); |
90 | $new->debug(1) if $ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}; |
223b8fe3 |
91 | return $new; |
8b445e33 |
92 | } |
93 | |
94 | sub get_simple { |
95 | my ($self, $get) = @_; |
96 | return $self->{$get}; |
97 | } |
98 | |
99 | sub set_simple { |
100 | my ($self, $set, $val) = @_; |
101 | return $self->{$set} = $val; |
102 | } |
103 | |
104 | =head1 NAME |
105 | |
106 | DBIx::Class::Storage::DBI - DBI storage handler |
107 | |
108 | =head1 SYNOPSIS |
109 | |
110 | =head1 DESCRIPTION |
111 | |
112 | This class represents the connection to the database |
113 | |
114 | =head1 METHODS |
115 | |
116 | =over 4 |
117 | |
118 | =cut |
119 | |
120 | sub dbh { |
121 | my ($self) = @_; |
122 | my $dbh; |
123 | unless (($dbh = $self->_dbh) && $dbh->FETCH('Active') && $dbh->ping) { |
124 | $self->_populate_dbh; |
125 | } |
126 | return $self->_dbh; |
127 | } |
128 | |
48c69e7c |
129 | sub sql_maker { |
130 | my ($self) = @_; |
fdc1c3d0 |
131 | unless ($self->_sql_maker) { |
bd7efd39 |
132 | $self->_sql_maker(new DBIC::SQL::Abstract( limit_dialect => $self->dbh )); |
48c69e7c |
133 | } |
134 | return $self->_sql_maker; |
135 | } |
136 | |
8b445e33 |
137 | sub _populate_dbh { |
138 | my ($self) = @_; |
139 | my @info = @{$self->connect_info || []}; |
140 | $self->_dbh($self->_connect(@info)); |
141 | } |
142 | |
143 | sub _connect { |
144 | my ($self, @info) = @_; |
145 | return DBI->connect(@info); |
146 | } |
147 | |
148 | =item commit |
149 | |
150 | $class->commit; |
151 | |
152 | Issues a commit again the current dbh |
153 | |
154 | =cut |
155 | |
156 | sub commit { $_[0]->dbh->commit; } |
157 | |
158 | =item rollback |
159 | |
160 | $class->rollback; |
161 | |
162 | Issues a rollback again the current dbh |
163 | |
164 | =cut |
165 | |
166 | sub rollback { $_[0]->dbh->rollback; } |
167 | |
223b8fe3 |
168 | sub _execute { |
169 | my ($self, $op, $extra_bind, $ident, @args) = @_; |
170 | my ($sql, @bind) = $self->sql_maker->$op($ident, @args); |
944f30bf |
171 | unshift(@bind, @$extra_bind) if $extra_bind; |
223b8fe3 |
172 | warn "$sql: @bind" if $self->debug; |
173 | my $sth = $self->sth($sql); |
438adc0e |
174 | @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args |
175 | my $rv = $sth->execute(@bind); |
223b8fe3 |
176 | return (wantarray ? ($rv, $sth, @bind) : $rv); |
177 | } |
178 | |
8b445e33 |
179 | sub insert { |
180 | my ($self, $ident, $to_insert) = @_; |
20a2c954 |
181 | $self->throw( "Couldn't insert ".join(', ', map "$_ => $to_insert->{$_}", keys %$to_insert)." into ${ident}" ) |
223b8fe3 |
182 | unless ($self->_execute('insert' => [], $ident, $to_insert) > 0); |
8b445e33 |
183 | return $to_insert; |
184 | } |
185 | |
186 | sub update { |
223b8fe3 |
187 | return shift->_execute('update' => [], @_); |
8b445e33 |
188 | } |
189 | |
190 | sub delete { |
223b8fe3 |
191 | return shift->_execute('delete' => [], @_); |
8b445e33 |
192 | } |
193 | |
de705b51 |
194 | sub _select { |
8b445e33 |
195 | my ($self, $ident, $select, $condition, $attrs) = @_; |
223b8fe3 |
196 | my $order = $attrs->{order_by}; |
197 | if (ref $condition eq 'SCALAR') { |
198 | $order = $1 if $$condition =~ s/ORDER BY (.*)$//i; |
199 | } |
5c91499f |
200 | my @args = ('select', $attrs->{bind}, $ident, $select, $condition, $order); |
9229f20a |
201 | if ($attrs->{software_limit} || |
202 | $self->sql_maker->_default_limit_syntax eq "GenericSubQ") { |
203 | $attrs->{software_limit} = 1; |
5c91499f |
204 | } else { |
205 | push @args, $attrs->{rows}, $attrs->{offset}; |
206 | } |
de705b51 |
207 | return $self->_execute(@args); |
208 | } |
209 | |
210 | sub select { |
211 | my $self = shift; |
212 | my ($ident, $select, $condition, $attrs) = @_; |
213 | my ($rv, $sth, @bind) = $self->_select(@_); |
223b8fe3 |
214 | return $self->cursor->new($sth, \@bind, $attrs); |
8b445e33 |
215 | } |
216 | |
1a14aa3f |
217 | sub select_single { |
de705b51 |
218 | my $self = shift; |
219 | my ($rv, $sth, @bind) = $self->_select(@_); |
1a14aa3f |
220 | return $sth->fetchrow_array; |
221 | } |
222 | |
8b445e33 |
223 | sub sth { |
224 | shift->dbh->prepare(@_); |
225 | } |
226 | |
227 | 1; |
228 | |
229 | =back |
230 | |
231 | =head1 AUTHORS |
232 | |
daec44b8 |
233 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
8b445e33 |
234 | |
9f19b1d6 |
235 | Andy Grundman <andy@hybridized.org> |
236 | |
8b445e33 |
237 | =head1 LICENSE |
238 | |
239 | You may distribute this code under the same terms as Perl itself. |
240 | |
241 | =cut |
242 | |